The expression is sensitive to frost characteristics, hence it may be used for detecting a forested area.

该表达式对森林地区的特征敏感，所以可用来检测森林地区。

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On the basis of global warming, it was significance to predict and prevent local frost through analyzing the characteristics of frost climatic variation.

在近年来气候变暖的基础上，分析探讨霜冻的气候变化特征，对提高当地霜冻灾害的预测和防御能力有着十分重要的意义。

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This paper analyzes some heat-exchange characteristics of evaporator on the condition of frosting in the desiccation system, especially of frost velocity, frosting time and heat exchange calculation.

分析了除湿系统中直接蒸发式表面冷却器在结霜工况下的换热特性，特别是结霜速度、结霜时间以及结霜时的换热计算。

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